Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours:

http://lists.squeakfoundation.org/pipermail/packages/2011-December/005123.html

Name: Kernel-dtl.658
Ancestors: Kernel-ul.657

The primitive fallback code in object:perform:withArguments:inClass: should test 'selector isSymbol' rather than 'selector isMemberOf: Symbol' because #someSelector isMemberOf: Symbol ==> false

Observed when running testMirrorPerform on a VM with failing primitivePerformInSuperclass, resulting in a misleading error message.

=============================================